When you are finally called for your Embassy interview this should very much be a formality providing you are prepared. In the Embassy package you would have been asked to prepare supporting documentation for your case. Some of the information would need to be in the form of originals such as birth certificates, your passport, prior marriage and divorce certificates, (if applicable), and the last three years’ tax returns of both parties. In addition, the alien would need to submit their original police reports.

K1 Fiance Visa Guide